| Abstract
| - Semiclassical techniques are used to analyze highly excited pure bending vibrational dynamics from spectraof C2H2. An analytic bifurcation approach is developed, based on critical points of a classical version of thequantum fitting Hamiltonian. At high energy four new types of anharmonic modes are born in bifurcationsof the normal modes: local, orthogonal, precessional, and counter-rotator. Visual insight into their nature isobtained with the help of computer-generated three-dimensional animations. The connection between thelocal mode and the acetylene−vinylidene isomerization “reaction mode” is considered.
|
